Century Hawk Pro Instruction Manual
Hawk Pro
Instruction Manual
SPECIFICATIONS
Main Rotor Diameter 49.5 in.
Tail Rotor Diameter 9.3 in.
Overall Length 46 in.
Height 16.2 in.
Engine 32 ~ 40
Ball Bearings 47
Century Helicopter Products
Designed and Developed in USA
1st Edition April 2005 All rights reserved.
Table of Contents
Table of Contents & Introduction ................................................................................................................2
Required Items and Tools for Assembly .....................................................................................................3
Package contents ......................................................................................................................................4
Section 1 Preparing the engine .................................................................................................................. 5
Section 2 Assembling the main frame ........................................................................................................5
Section 3 Assembling the servo tray .......................................................................................................... 6
Section 4 Fuel tank & fittings ......................................................................................................................6
Section 5 Muffler & fuel tubing ...................................................................................................................7
Section 6 Flybar & rotor head assembly ....................................................................................................7
Section 7 Landing gear ..............................................................................................................................8
Section 8 Tail boom & drive system ...........................................................................................................8
Section 9 Tail boom support struts and tail fin set ......................................................................................9
Section 10 Tail control rod and pitch control ............................................................................................... 9
Section 11 Throttle & collective linkage ......................................................................................................
Section 12 Cyclic servo linkage ................................................................................................................10
Section 13 Rotor head linkage .................................................................................................................10
Section 14 Connect the electronics ..........................................................................................................10
Section 15 Main rotor blade installation ...................................................................................................10
Section 16 Antenna routing ...................................................................................................................... 11
Section 17 Mounting the canopy .............................................................................................................. 11
Main sub assemblies (exploded views) ...............................................................................................12-17
Replacement part list and photos ........................................................................................................18-20
Upgrades .............................................................................................................................................21-22
9
Introduction
Congratulations on your purchase of Century Helicopter Product’s latest version of our HAWK series RC helicopter model. The
Hawk Pro helicopter is not only ideal for beginners new to the hobby, but also for the intermediate and right on through to the
expert and 3D flyers. A 6 channel helicopter radio is recommended as the bare minimum to take advantage of the helicopter
programming included in these radios. You may wish to check with us or your local dealer for compatible components.
Warning
This radio controlled model is not a toy! It is a precision machine requiring proper assembly and setup to avoid accidents. It
is the responsibility of the owner to operate this product in a safe manner as it can inflict serious injury. It is recommended that
if you are in doubt of your abilities, seek assistance from experienced radio control helicopter modelers and associations. As
manufacturer, we assume no liability for the use of this product.
Pre-assembly Information
Upon opening the kit, all the major component parts are packaged in numbered bags to correspond to specific sections of the
manual, greatly facilitating assembly. Various assemblies have been pre-assembled, only requiring the final assembly and installation of the various sub-assemblies. The screws and nuts required for each step are packaged in the same bag as the parts
for that step. Be careful not to lose any of the hardware when opening each bag. Care has been taken in filling and packing of
each bag.
Warranty
Your new equipment is warranted to the original purchaser against manufacturer defects in material and workmanship for 30
days from the date of purchase. During this period, Century Helicopter Products will repair or replace, at our discretion, any
component that is found to be factory defective at no cost to the purchaser. This warranty is limited to the original purchaser
and is not transferable. This warranty does not apply to any unit which has been improperly installed, mishandled, abused, or
damaged in a crash, or to any unit which has been repaired or altered by any unauthorized agencies. Under no circumstances
will the buyer be entitled to consequential or incidental damages. This limited warranty gives you specific legal rights. You also
have other rights which may vary from state.
2
Century Helicopter Products
1740 Junction Ave. C.
San Jose, CA 95112
Fax: (408) 451-1156
www.centuryheli.com
Required items for operation
This is the general list of items required to get started on any nitro R/C helicopter. Century produces a full spectrum of accessories and tools to
assemble your helicopter. The Hawk Pro is a mechanical cyclic collective pitch mixing type helicopter requiring a standard helicopter radio (the
helicopter radio does not require eCCPM type mixing for this model). The Hawk Pro uses 5 servos to operate critical systems. Gyroscopes are
required to operate the model safely.
Necessary Items “Not Included” in the kit.
Transmitter
#PG2000 II dual rate piezo gyro
#CN2018 (or eqivalent)
Servos (5)
Receiver
Bettery Pack
32-40 Helicopter Engine
6 Channel Helicopter Radio or Equivalent.
Fastener and ball bearing dimensions
Hardware Description and Identification: M3x6 = 3x6mm and can refer to screws or ball bearings.
M3x6 Phillips Machine Screw
M - metric
3 - diameter
6 - length
M3x6 Self Tapping Screw
M - metric
3 - diameter
6 - length
M3x10 Socket Cap Screw
M - metric
3 - diameter
6 - length
Remote Glow Adapter
#CN2222 (optional)
Tuned Muffler (example #CN3033)
3x7 Ball Bearing
M - metric
3 - inside
6 - outside
Recommended Tools & Accessories
The tools and materials listed below are
the minimum needed to build the helicopter:
Screwdrivers - Slotted and Phillips head
Long-Nosed Pliers.
Allen Wrenches - 1.5mm, 2.0mm, 2.5mm
( supplied in kit ) + 3.0mm
Appropriate Socket Wrench
(glow plug wrench for engine shaft nut)
Hobby Scissors
Double Sided Foam Tape ( 1/16” - 3/32” )
Foam Rubber ( radio packing )
JB Weld ( bond clutch lining )
Thread lock liquid (e.g. Locktite)
Hobby Grease ( Super Lube )
Oil to lubricate sliding shafts
“Y” Harness for 4 Ch Airplane Radio with 5 servo
Main Blade Pitch Gauge
w/PaddleGauge
#CN2026
Glow Plug
Servo Tape
In addition, the following will make assembly and setup easier, and
prove useful later in your model toolbox:
Part#CN2015 Hardened Tip Hex Screw Driver Set
Part#CN2026 Pitch Gauge with Paddle Gauge
Part#CN2034A 150 Curve Tip Ball link Pliers
Part#CN2052 Main Blade Balancer
Part#CN2054P Glow Plug Wrench Purple
Part#CN2055 Ball Link Sizing Tool
Part#CN2070 Universal Flybar Lock
Part#CN2155 Piston Locking Tool
Part#CN2219 Ball Link Easy Driver
Part#CN2255 Control Rod Guage
Part#CNWI26555 5.5mm Nut Driver
Part#CNWI26570 7.0mm Nut Driver
Hobby scissors
Needle Nose Plier
& Cutter Pliers
15% or 30%
Heli Fuel
Locktite
CN2025BS blue
CN2025RS red
12Volt Start Battery
Fuel
Line
Glow Driver
w/Charger
CN2024T
Lubrication
Electric or Hand
Fuel Pump
12Volt
Starter
3
Package contents: Opening The Hawk Pro for the first time
Time to inventory your Hawk Pro! The helicopter is assorted into multiple bags contained inside the box. Each bag will have some parts that are
not associated with that specific part bag. We recommend organizing all hardware and pieces and inventory them then keep them with their respective bags. It is common to have a few screws and/or washers left on the side after the build.
Tail section
Lower frame set Servo frame set
Rotor head items
Upper frame set
Canopy
Hardware/ Pushrods
Clutch, fan & shroud
Muffler
Decal sheet
Landing gear
Tail section:
•Tail assembly (complete)
•Tail boom support struts (2)
•Flybar (1)
*Antenna tube (1)
Rotor Head Items:
•Rotor head (complete)
•Flybar paddles (2)
•Paddle weights (2)
•3x3 set screws (2) (for paddle weights)
•Flybar control arm (2)
•Double link (2) (flybar to washout arm)
•4x5 set screws (2) (flybar control arms)
•3x6x2.5 plastic spacer (2) (between flybar control arm
and seesaw)
•3x7x3 ball bearing (2) (flybar, inside seesaw bearing
cups)
Upper frame set:
•Upper side frame assembly (complete)
•Aluminum canopy standoff (2)
•Canopy grommets (2)
•Canopy hook (1) (inside canopy)
•3X40 threaded rod (1) (canopy standoffs)
•Horizontal fin upper clamp (1) (white plastic part that
connects to fin)
•M3 lock nut (1)
•3x20 Socket head cap screw (1)
•M3 locknut (1)
•3x6 self tapping screw (2) (connects lower side frame
to fan shroud)
•3x12 Self tapping screws (4) (for servos)
•3x16 Socked head cap screws (4) (not used/spares)
4
Fin pack
•3x8 flat washers (4)
•Rudder servo mount bracket (1)
•3x30 socket head cap screws (2)
•Grey ball link (1) (rudder pushrod forward end)
•Servo mounting tabs (7)
Clutch, fan & shroud:
•Clutch (clutch and housing) (1)
•Cooling fan (1)
•Cooling fan shroud (1)
•Long aluminum tube (1)
•Short aluminum tube (1)
•Fuel fitting set (1 set)
•Tie wrap (1)
•Clunk (1)
•3x18 self tapping screw (1) (fuel cap)
•5 inches fuel tubing (1)
•5x13 flat washer (1) (between cooling fan and
engine nut)
•9x14 flat washer (1) (replaces thrust washer on
engine)
•3x16 socket head cap screws(4)
•3x8 self tapping screws (2)
•3x12 self tapping screw (2)
•3x6 washer head screws (2)
Hardware/Pushrods:
•1 foot fuel tubing (1)
•Pushrods (5)
•4x30 Socket head cap screws (2) (main blade bolts)
•M4 locknut (2)
•2.5x12 self tapping screws (20) (servos)
•Throttle lever (1)
•Metric allen key (3)
Main rotor blades
Windshield
•Throttle pushrod (1)
•M2 short balls (7) (servo arms)
•M2 nut (7) (servo arms)
•3x25 socket head cap screws (4)
•M3 locknut (4)
Fin pack:
•Vertical and horizontal fins (1ea.)
•tail rotor blades (2)
•3x16 socket head cap scews (4)
•M3 locknut (6)
•3x8 self tapping screws (2) (fin clamp underside)
•3x8 flat washer (4)
•3x9x4 thick spacer (2) (boom support to frame)
•3x30 socket head cap screws (2) (vertical fin)
Landing gear:
•Landing struts (2)
•Landing skids (2)
•M3 locknut (4)
•3x20 socket head cap screws (4)
•3x9x4 plastic landing gear spacer (4)
•3x4 set screw (4)
Canopy (1)
Windshield (1)
Decal sheet (1)
Lower frame set (1)
Servo frame set (1)
Muffler (1)
Main rotor blades (1 pair with hardware)
Section 1: Preparing the engine
Remove the thrust washer that comes on the engine from the factory. Only use the
9x14 washer that comes with the fan and clutch package. Mount that washer first and
the clutch (1.1-1.2) to the engine using thread lock. Mount the fan so the two protruding portions on the underside slide into the slots machined in the clutch (1.3). Remove
the stock engine throttle arm and use the one provided with the helicopter kit. (packed
with the fuel hardware/pushrods pack). Place the 6.5x13 Washer (packed with fan and
clutch also) between the fan and the crankshaft nut and tighten using thread lock (1.4).
In order to tighten the assembly properly, the piston must not be allowed to turn (you
can use the optional #CN2155 piston locking tool).
1.1
Must use RED (strongest)
lthreadlocking compound
for engine installation.
Crankshaft
nut provided
with engine
1.4
Piston locking tool
(optional) #CN2155
M9x14
washer
Clutch
1.2
1.3
Cooling fan
Section 2: Assembling the main frame
Using thread lock, mount the engine assembly to the engine mount in the lower side frame assembly (2.1). After the engine is installed, combine
the upper and lower side frame sections (2.2) Before bolting, attach the fan shroud securely to the frame assembly slightly overlapping the fan
shroud portion of the upper side frames (2.3). Use hardware provided to finish assembling the frames. (2.4 & 2.5). Install the canopy mounting
hardware (2.6 & 2.7) by first threading one end of the threaded steel rod into one of the aluminum standoffs. Insert the aluminum standoff and rod
into the frame (2.6) and thread the other standoff (2.7) on until tight. The upper and lower frames are now assembled (2.8).
2.1
M3x16
socket
head cap
screw (x4)
2.2
2.3
2.4
M3x12 socket head
cap screw (x4)
M3 Washer (x4)
The M3x12
screws in
this step are
stapled to
your manual
or kit.
2.7
2.5
M3x6 self
tapping
screw (x2)
2.8
Canopy aluminum
standoffs (x2)
Threaded rod (1X)
2.6
Note:
IMPORTANT: Motor mount screws DO NOT have thread lock
yet. Loosen these screws to position the motor or replace with
optional #HW3018A for .50 size engines.
5
Section 3: Installing servos to servo tray
Insert and attach the lower throttle servo on the left side (3.1) with the output “horn” facing the front of the servo tray. Install the upper collective servo above the throttle servo
with the output facing the back (3.2). Attach the aileron servo (3.2) to the middle of the
top portion of the servo tray with the horn facing forward. Attach the elevator servo to
the left of the aileron servo horn facing rearward (3.2). Attach the power switch (3.3) to
the switch plate provided on the right hand side of the servo frame. Slide the gyro in
place (3.4). If possible, expose the gyro’s manual controls for future easy adjustment.
Attach the servo frame assembly to the main frame assembly forward section (3.5 - 3.6)
using provided hardware. Attach the rear rudder servo mount to the right hand aft section of the upper side frame with the output facing rearward (3.7). Completed section
(3.8) depicted.
Aileron servo
3.2 3.3
Elevator servo
Collective
pitch servo
Throttle
servo
3.1
install
servos with
M2.5x12
self tapping
screws
Front
3.4
Screws for
switch are
provided
with switch
in radio
system
Use thread lock
M3x6 washer
head screws (2)
3.5
3.8
3.6
3x12 self tapping
screws (2)
Section 4: Fuel tank
& fittings
Assemble the fuel stopper (found in
the bag with the upper frames) (4.1)
by bending the longer aluminum tube
(connects to muffler nipple) so it will end
at the top inside the fuel tank. Align the
short straight aluminum tube level to the
engine carburetor fuel intake. Secure
with M3x18 screw supplied in clutch/fan
package and tie wrap (4.2 & 4.3)
fuel tank
pickup
“clunk”
M3x25 socket head
cap screws (2)
M3 locknut (2)
Short straight tube
(sends fuel to engine)
Fuel line
3.7
4.1
Long curved
tube (from
muffler nipple)
Fuel fitting set
assembled
4.2
6
4.3
Tie wrap
M3x18 self
tapping screw
Section 5: Muffler & fuel routing
Install the pressure nipple using a high temperature
adhesive (thread lock) to the top of the muffler and
the 4mm plug screw to the bottom (5.1). Bolt the
muffler to the engine (5.2) flush (no gasket required)
using thread lock. Connect fuel tube between the
fuel pickup in the tank and the carb on the engine
with as little slack as possible (5.3). Connection
between the carb and the fuel pickup tube (short
straight) should be level (keeps fuel draw rate in
inverted flight). Connect the fuel tank air tube (long
curved) to the muffler pressure nipple (5.3).
Using thread
lock:
3x25 socket
head cap
screw (2)
5.2
Using thread lock:
Hardware provided with muffler
(Optional Toki muffler for Toki .40 engine shown. Toki muffler is
supplied with a Hawk Pro “Toki engine and muffler combo”)
5.3
5.1
5.4
Section 6: Flybar & head assembly
Install the flybar, flybar control arms,
weights and paddles into the rotor
head seesaw assembly as shown (6.1).
First slide the flybar in place through
the seesaw assembly. Then slide the
ball bearings included with the two ball
bearings into the seesaw cups on each
end. Then slide the M3x6 plastic spacers
on to each side of the flybar. Next slide
the 2 flybar control arms as shown
(6.1) Use thread lock on the set screws
connecting the flybar weights to the flybar
(6.2 - 6.3). Align the flybar paddles and
control arms level to the seesaw assembly
(LEADING EDGE OF PADDLES MUST
GO CLOCKWISE). The assembled flybar
must be the same length on each side of
the rotor head. Install the completed rotor
head to the main shaft (6.4) with one 3x16
cap screw and M3 locknut.
M3x7 Ball
bearing (2)
Seesaw
assembly
(bearing cup)
M3x6
spacer (2)
M4x5 Set
screw
Flybar
control
arm
Flybar paddle
Flybar weight
M3x4 Set
screw
6.1
Trailing edge
Leading edge
6.2
Using thread lock
M4x5 set screw (2)
Using thread lock
M3x3 set screw (2)
6.3
6.4
M3x16 socket head
cap screw (1)
M3 locknut (1)
7
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